I posted a message about SDI vs. PADI, and have realized that advice given saying that the differences between the instructor's, not SDI vs. PADI, is what matters. My question is... I have completed the "classroom" and pool sessions with my SDI course and am able to go on to my open water dives. I don't feel that anything was taught "thouroughly" at all. I went to the other local dive shop (PADI) and heard an earful on how the other shop is nothing short of neglegent, and that the instructor is banned from several of the local quarries - plus much more negative information. Now, I am reluctant to finish my SDI course. It was suggested that I drop where I am at and take the PADI course - pay again. I feel that this is actually good advice except for the pay again part :06: In trying to feel like I didn't totally waste my money, I asked if I should at least get my SDI referral paperwork and get both certifications - my advice was no, don't bother. Should I just complete my SDI open water and take the PADI advanced open water - should I just drop where I am at and do PADI only - should I get my referral papers and start over with the PADI open water and end up with both certifications??? I am new to this and learning more about the business of it than the diving aspect - not what I was looking for. Any advice would be really appreciated!